Rotary oil-well rig



ROTARY OIL WELL RIG.

7 APPLICATION FILED- FEB. 14.1920. 1,3 3,1 0, Patented Dec. 21,1920.

2 SHEETS-SHEET I.

C. L. GOSS.

ROTARY OIL WELL RIG.

APPLICATION FILED FEB. 14.1920.

1,363,110, Patented'Dec. 21,1920.

2 SHEETS-SHEET 2.

Wk .w V/M .UNITED STATES CLAUDE L. GOSS, 0F SHREVEPORT, LOUISIANA.

ROTARY OIL-WELL RIG.

Application filed February 14, 1926.

To all whom it may concern Be it known that I, CLAUDE L. Goss, a citizen of the United States, residing at Shreveport, in the parish of Caddo and State of Louisiana, have invented certainnew anduseful Improvements in Rotary ()il-VV ell Rigs; and I do hereby declare the following to be a. full, clear, and exact description of the invention, such as will enable other skilled in the art to which it appertains to make and use the same.

The present invention relates to improvements in rotary oil well rigs, and the object thereof is to provide an improved rig for use in threading adjacent sections of the well pipe together.

Another object of the present invention is to so modify the present standard construction of oil well rigs, that with but a few changes, the rig may be placed in condition for threading the pipe; and after such threading operation is completed the two sections of pipe so connected may be lowered into the well and additional sections of pipe thereafter added or the pipe r0 tated as desired.

In the accompanying drawings forming a part of this application, and in which simi lar reference symbols indicate correspondin parts in the several views:

Figure 1 is a horizontal sectional view taken on the line 11 in Fig. 2;

Fig. 2 is a side elevational View of a rotary rig constructed in accordance with the present invention;

Fig. v3 is a vertical sectional view taken on the line 33 in Fig. 2; a

Fig. 4 is a vertical sectional viewtaken longitudinally through the rig and showing the parts in condition for threading the pipe sections together;

Fig. 5 is a view similar to Fig. 4, of the rig in condition for rotation;

Fig. 6 is a bottom plan view of the rig with the parts in the position shown in Fig. '5;

Fig. 7 is a perspective view of the improved spider placed within the rotary table; and

Fig. 8 is a perspective view of one of the Wedges employed to hold the pipe in the spider.

Referring more particularly to the drawings, 1 and 2 designate the longitudinal runners which support at one side a platform 3 carrying the rotary table 4 to which is Specification of Letters Patent.

. position of Patented Dec. 21, 1920. Serial No. 358,606.

afiixed the'bevel gear 5. A bevel pinion 6 is in constant mesh with the bevel gear 5 and is mounted on a power shaft 7 which is journaled in suitable bearings carried by cross pieces 8 and 9. The shaft 7 receives its rotation from the usual source.

Within the rotary table 4 is placed a spider 10, which, in accordance with the present invention, is made to move vertically therein and is preferably formed conical, so as when lowered to fit tightly against a similar conical wall 11 formed on the interior of the rotary table 4. The lowered the spider 4 is shown in Fig. 5. When lowered, lugs'12, in any'suitable numher on the spider l0, fit within notches or recesses 13 provided in the upper portion of the rotary table 4, so that in this lowered position of the spider the lugs 12 and notches 13 cooperate to form a driving clutch, causing the rotation of the spider 10 with the rotary table 4. lVhen, however,

the spider is lifted, as shown in Fig. 4, the

lugs 12 are disengaged from the'notches 13 and the rotary movement of the table 4 will not be communicated to the spider 10, but such spider will remain at rest while the table rotates thereabout.

The wedges 14 fit within the conical interior walls of the spider l0, and are formed with exterior walls to correspond therewith, the wedges 14 shown being two in number and illustrated as clamping a section of pipe 15 therebetween. The pipe is threaded at its ends where it receives a threaded collar 16 into which the adjacent threaded end of the next section of pipe 17 is adapted to be screwed. The pipe section 17 is held by the long tongs 18 supported. for vertical adjustment on a post 19 by means of a set collar 20.

Sockets 21 are made in the upper portion of the rotary table 4 to receive the lower end of the post 19, so that the post and upper pipe section 17 may be supported by and made to rotate with the table 4, while the lower pipe section 15 is held stationary by means of the wedges 14 in the spider 10. The collar 16 is also held by means of short tongs 22 adjustably or otherwise secured on a post 23 which is fitted in a socket 24 provided in the upper flanged portion of the spider 10. Being held by the spider, which is shown out of engagement with the rotary table 4 in Fig. 4, the threaded collar 16 will, in this condition, remain stationary,

while the upper section of pipe 17 turns with the rotary table 4:, and consequently such section 17 will be screwed into the collar 16, thus uniting the two sections 15 and 17 of the pipe. I

The spider 10, as shown most clearly in Fig. 7, is provided with cut away portions at diametrically opposite portions at its lower end, the cut away portions being made in such a way as to provide shoulders 26 adapted to be engaged by a pair of sup porting bars 27 and 28. preferably of angle iron construction and sliding in guideways 29 and 30 provided in the runners or other suitable parts. The cut away portions 25 permit the entrance of the supporting bars 27 and 28 beneath the shoulders 26 when the spider 10 is raised as shown in Fig. 4, and such supporting bars then sustain the spider in the raised position.

The spiders 27 and 28 may be reciprocated in any suitable manner, but they are preferably each connected to stems 31 hav-.

' ing connection to links 32, which in turn are coupled to cranks 33 on a rock shaft 3 journaled preferably in the runners, and provided, as shown in Fig. 1, with a handle 35 by which the shaft may be turned to move the bars into a supporting or an inoperative position. Fig. t. shows the bars 27 and 28 in the supporting position; whereas Fig. 5 shows them retracted, allowing the spider 10 to fall into a position where it will rotate with the table 4:.

Removable pins 36 are adapted to be inserted through the platform 3 and to engage the supporting bars 27 and 28, so that when the bars are in the inoperative position they may not be accidentally moved forward, and when in the operative position they may not be jarred from beneath the spider 10.

From the foregoing it will be appreciated that I have provided but few additional parts to the standard form of rotary rig, and that by so doing pipe sections may be quickly screwed together without the inconvenience and difficulty experienced at the present time in carrying out this operation.

It is to be understood that the rotary is used in the well known manner and that the piping is fed downwardly,therethroiigh in any desired manner. The illustration has been limited to showing the rotary in the condition it assumes when additional sections of the pipe are to be coupled to gether. The invention deals solely with a construction whereby this result is accomplished, and it does not relate to the pipe feeding means or to any other parts of the rotary except those illustrated, it being understood by those skilled in the 'art that these parts are constructed and used in a manner now well known. The spider 10 may be raised by the use of grapples, chains,

or by hand in case this proves feasible with fore I do not wish to be limited to such features except as may be required by the claims.

I claim:

1. In combination, a rotary table, means to rotate said table, a spider within said table having a conical wall, wedges adapted to fit within the conical wall of the spider and to hold the well piping therein, means whereby said spider may be coupled to turn with the table, said spider having cut away portions at its lower end providing shoulders, reciprocating bars mounted beneath the table and adapted to be moved within the cut away portions of said spider and beneath said shoulders whereby to hold the spider in a position wherein the latter will be uncoupled from the table, and means extending from the table and from the spider for connection to a section of pipe and its coupling, respectively, substantially as described. v

2. In combination, a rotary table, means to rotate the table, a spider removably fitted in the table, means whereby the spider may be detachably coupled to rotate with the table, means within the spider for holding a section of pipe therein, said spider being cut away at its lower portion providing shoulders, a pair of reciprocating bars mounted beneath the spider, means coupled to said bars for simultaneously moving the same together and apart, said .bars acting to enter the cut out ,portions of the spider when moved together and to lie beneath the shoulders for supporting the spider in a position out of rotatable engagement with said table, and means carried by the table and spider for respective connection to a section of pipe and its coupling, substantially as described.

3. In combination, a rotary table, means to rotate the table, a spider removably carried by the table, means for detachably connecting the spider to rotate with the table, means fitted within the spider for holding a pipe therein, said spider having cut away portions forming shoulders, a pair of bars, means for shifting said bars in and out of the cut away portions of the spider,

said bars adapted to engage said shoulders and hold'the spider in an elevated position out of rotatable engagement with said table,

,and removable means engaging the bars for holding them either in or out of engagement with said shoulders, substantially as described.

CLAUDE L. GOSS. 

